Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-29T11:07:22.874Z Has data issue: false hasContentIssue false
  • English
  • Français

The response of pastures in Northern Ireland to N, P and K fertilizers and to animal slurries: III. Effects in experiments continued for either two or three years

Published online by Cambridge University Press:  27 March 2009

S. N. Adams
S. N. Adams
Affiliation:
Agricultural and Food Chemistry Department, Queen's University of Belfast and Ministry of Agriculture, Northern Ireland
Get access Rights & Permissions [Opens in a new window]

Summary

Three factorial experiments made in 1969 on Northern Ireland pastures to measure effects upon yield and mineral content of 0, 180 and 360 kg N, 0, 30 or 60 kg P and 0, 150 or 300 kg K/ha/year, both with and without 1380001 slurry/ha, were continued on the same sites with the same treatments in 1970 and two of them were continued again in 1971.

Responses to nitrogen in the second and third seasons were similar to those of the first season. There was no evidence that large nitrogen dressings plus slurry were causing nitrogen to accumulate in the soil.

Repeated cutting of herbage given neither fertilizer potassium nor slurry was beginning to reduce both yield and the potassium content of the herbage in the second and third years. Giving fertilizer potassium prevented these losses, but the potassium in the slurries was less effective because it did not maintain the potassium content of the herbage. Reasons for, and implications of this effect are discussed.

There was no evidence that soil phosphorus reserves were becoming depleted, when judged by the % P in herbage receiving neither fertilizer nor slurry even after the herbage had been cut and removed for two or three years. As there was no immediate need for fertilizer phosphorus, the P in the slurries, even though slower acting than that in mineral fertilizers, seemed suitable for maintaining the phosphorus status of these pasture soils.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 82 , Issue 1 , February 1974 , pp. 129 - 137
Copyright
Copyright © Cambridge University Press 1974

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Adams, S. N. (1973 a). The response of pastures in Northern Ireland to N, P and K fertilizers and to animal slurries. I. Effects on dry matter yield. Journal of Agricultural Science, Cambridge 81, 411–17.CrossRefGoogle Scholar
Adams, S. N. (1973 b). The response of pastures in Northern Ireland to N, P and K fertilizers and to animal slurries. II. Effects on mineral composition. Journal of Agricultural Science, Cambridge 81, 419–28.CrossRefGoogle Scholar
Berryman, C. (1971). Residual value of slurries (cattle, pig and poultry). Technical Bulletin of the Ministry of Agriculture, Fisheries and Food, No. 20, 326–33. London: H.M.S.O.Google Scholar
Brockman, J. S., Shaw, P. & Wolton, K. M. (1970). The effect of phosphate and potash fertilizers on cut and grazed grassland. Journal of Agricultural Science, Cambridge 74, 397–407.CrossRefGoogle Scholar
Brockman, J. S., Shaw, P. & Wolton, F. M. (1971). The residual effect of phosphate and potash fertilizers applied to cut grassland. Journal of Agricultural Science, Cambridge 76, 387–9.CrossRefGoogle Scholar
Castle, M. E. & Holmes, W. (1960). The intensive production of herbage for crop drying. VII. The effect of further continued massive applications of nitrogen with and without phosphate and potash on the yield of grassland herbage. Journal of Agricultural Science, Cambridge 55, 251–60.CrossRefGoogle Scholar
Gunary, D. (1968). The availability of phosphate in sheep dung. Journal of Agricultural Science, Cambridge 70, 33–8.CrossRefGoogle Scholar
Heddle, R. G. (1967). Long term effects of fertilizers on herbage production. I. Yields and botanical composition. Journal of Agricultural Science, Cambridge 69, 425–31.CrossRefGoogle Scholar
Linehan, P. A. & Lowe, J. (1960). Grassland output and vegetational changes on a heavy County Fermanagh soil, as influenced by type of seeds mixture sown and by rate of nitrogenous manuring. Record of Agricultural Research. Ministry of Agriculture, Northern Ireland 10, 55–84.Google Scholar
McAllister, J. S. V. (1971). Nutrient balance on livestock farms. 1st Colloquium of the Potassium Institute Ltd. 113–21.Google Scholar
McAllister, J. S. V. & McConaghy, S. (1960). The application of heavy dressings of nitrogen to pasture. Record of Agricultural Research. Ministry of Agriculture, Northern Ireland, 10, 87–99.Google Scholar
Ministry of Agriculture and Fisheries, Netherland (1967). The nutrient balance for clay, peat and sandy soils. Leaflet No. 131.Google Scholar
Newbould, P., Taylor, R. & Howse, K. R. (1971). The absorption of phosphate and calcium from different depths in soil by swards of perennial ryegrass. Journal of the British Grassland Society 26, 201–8.CrossRefGoogle Scholar
Reith, J. W. S. et al. (1961). The effects of fertilizers on herbage production. I. The effects of nitrogen, phosphate, potash on yield. Journal of Agricultural Science, Cambridge 56, 17–29.CrossRefGoogle Scholar
Widdowson, A. V., Penny, A. & Williams, R. J. B. (1966). An experiment measuring effects of N, P and K fertilizers on yield and N, P and K contents of grazed grass. Journal of Agricultural Science, Cambridge 67, 121–8.CrossRefGoogle Scholar
Wolton, K. M. (1963). An investigation into the simulation of nutrient returns by the grazing animal in grassland experimentation. Journal of the British Grassland Society 18, 213–19.CrossRefGoogle Scholar
Wolton, K. M., Brockman, J. S., Brouqh, D. W. T. & Shaw, P. G. (1968). The effect of nitrogen, phosphate and potash fertilizers on three grass species. Journal of Agricultural Science. Cambridge 70 195–202CrossRefGoogle Scholar